CADANT-CMTS-DOWNCHANNEL-MIB
AI MIB Summary
The CADANT-CMTS-DOWNCHANNEL-MIB enables the monitoring and configuration of downstream channel parameters, including frequency, modulation type, power levels, and error statistics, on ARRIS (now CommScope) Cable Modem Termination Systems. This module provides granular visibility into the physical layer performance and operational state of DOCSIS downstream channels to facilitate troubleshooting and capacity planning.
ARRIS CMTS Downstream Channel Configuration and Constants
Main OID:
cadDownchannelMib.1.3.6.1.4.1.4998.1.1.15.2
99
Objects
Active
Status
6
Dependencies
Imported Objects
Objects
99 total| Object Name |
|---|
cadDownchannelMibARRIS CMTS Downstream Channel Configuration and Constants MODULE-IDENTITY .1.3.6.1.4.1.4998.1.1.15.2 |
IMPORTSARRIS CMTS Downstream Channel Configuration and Constants Unknown .1.3.6.1.4.1.4998.1.1.15.2 |
cadIfDownstreamChannelTableThis table describes the attributes of downstream
channels (frequency bands). SEQUENCE OF CadIfDownstreamChannelEntry .1.3.6.1.4.1.4998.1.1.15.2.1 |
cadIfDownstreamChannelEntryAn entry provides a list of attributes for a single
Downstream channel.
An entry in this table exists for each ifEntry with an
ifType of docsCableDownstream(128). CadIfDownstreamChannelEntry .1.3.6.1.4.1.4998.1.1.15.2.1.1 |
cadIfDownChannelIdThe Cable Modem Termination System (CMTS) identification
of the downstream channel within this particular MAC
interface. If the interface is down, the object returns
the most current value. If the downstream channel ID is
unknown on a DOCSIS channel, this object returns a value of 0.
A video downstream channel will have a value of -1.ro Integer32 (-1..255) .1.3.6.1.4.1.4998.1.1.15.2.1.1.1 |
cadIfDownChannelFrequencyThe center of the downstream frequency associated with
this channel. This object will return the current tuner
frequency. If this CMTS interface provides IF output only,
this object will return 0 and will be treated as read-only.
See the associated compliance object for a description of
valid frequencies that may be written to this object.rw Integer32 .1.3.6.1.4.1.4998.1.1.15.2.1.1.2 |
cadIfDownChannelWidthThe bandwidth of this downstream channel. Most
implementations are expected to support a channel width
of 6 MHz (North America) and/or 8 MHz (Europe). See the
associated compliance object for a description of the
valid channel widths for this object.rw Integer32 .1.3.6.1.4.1.4998.1.1.15.2.1.1.3 |
cadIfDownChannelModulationThe modulation type associated with this downstream
channel. If the interface is down, this object either
returns the configured value (CMTS), the most current
value (CM), or the value of unknown(1). See the
associated conformance object for write conditions and
limitations. See the reference for specifics on the
modulation profiles implied by qam64 and qam256.rw Enumeration .1.3.6.1.4.1.4998.1.1.15.2.1.1.4 |
cadIfDownChannelInterleaveThe Forward Error Correction (FEC) interleaving used
for this downstream channel.
Values are defined as follows:
taps8Increment16(3): protection 5.9/4.1 usec,
latency .22/.15 msec
taps16Increment8(4): protection 12/8.2 usec,
latency .48/.33 msec
taps32Increment4(5): protection 24/16 usec,
latency .98/.68 msec
taps64Increment2(6): protection 47/33 usec,
latency 2/1.4 msec
taps128Increment1(7): protection 95/66 usec,
latency 4/2.8 msec
taps12increment17(8): protection 18/14 usec,
latency 0.43/0.32 msec
If the interface is down, this object either returns
the configured value (CMTS), the most current value (CM),
or the value of unknown(1).
The value of other(2) is returned if the interleave
is known but not defined in the above list.
See the associated conformance object for write
conditions and limitations. See the reference for the FEC
configuration described by the setting of this object.
non RFC 2670 interleave modes are only available for annex B.rw Enumeration .1.3.6.1.4.1.4998.1.1.15.2.1.1.5 |
cadIfDownChannelPowerThe CMTS operational transmit power. If this CMTS
interface does not support output power control then
this object will return 0 and be treated as read-only.
If the interface is down, this object either returns
the configured value or the value of 0. See the
reference for recommended and required power levels.rw TenthdBmV (0|250..600) UNITS "dBmV" .1.3.6.1.4.1.4998.1.1.15.2.1.1.6 |
cadIfDownChannelPowerFineAdjAt the CMTS, the fine power adjustments steps to increase
or decrease the output power in incremental steps.rw Integer32 (-80..0) UNITS "Steps" .1.3.6.1.4.1.4998.1.1.15.2.1.1.7 |
cadIfCmtsCardNumberCard Number associated with this Channel.ro CardId (CADANT-TC) .1.3.6.1.4.1.4998.1.1.15.2.1.1.19 |
cadIfDownChannelCACL1ThresholdPercentage of available bandwidth on the channel that can
be reserved for admitted/active service flows before the
channel goes into Level 1 Overload. When a channel goes
into Level 1 Overload, a warning message will be logged.
Service flow activation/admission will not be denied in
Level 1 Overload.
If the percentage is set to 0, the default value will be
used and reading this object must return the the default
L1 threshold.
If a set operation tries to change the value of an
existing instance of this object to any value that
is higher than cadIfDownChannelCACL2Threshold or higher
than cadIfDownChannelCACL3Threshold on the same row, then
an 'inconsistentValue' error must be returned.rw Integer32 .1.3.6.1.4.1.4998.1.1.15.2.1.1.21 |
cadIfDownChannelCACL2ThresholdPercentage of available bandwidth on the channel that can
be reserved for admitted/active service flows before the
channel goes into Level 2 Overload. When a channel goes
into Level 2 Overload, a warning message will be logged.
Service flow activation/admission will not be denied in
Level 2 Overload.
A channel in Level 2 Overload is a good candidate for
overload control or load balancing actions.
If the percentage is set to 0, the default value will be
used and reading this object must return the the default
L2 threshold.
If a set operation tries to change the value of an
existing instance of this object to any value that
is higher than cadIfDownChannelCACL3Threshold or lower
than cadIfDownChannelCACL1Threshold on the same row, then
an 'inconsistentValue' error must be returned.rw Integer32 .1.3.6.1.4.1.4998.1.1.15.2.1.1.22 |
cadIfDownChannelCACL3ThresholdPercentage of available bandwidth on the channel that can
be reserved for admitted/active service flows. A
Registration Request, DSA Request or DSC Request will be
denied due to temporary resource limitations if it would
result in an active or admitted service flow whose
mininum reserved bandwidth would cause this threshold to
be exceeded on the downstream channel.
If the percentage is set to 0, the default value will be
used and reading this object must return the the default
L3 threshold.
If a set operation tries to change the value of an
existing instance of this object to any value that
is lower than cadIfDownChannelCACL1Threshold or lower
than cadIfDownChannelCACL2Threshold on the same row, then
an 'inconsistentValue' error must be returned.rw Integer32 .1.3.6.1.4.1.4998.1.1.15.2.1.1.23 |
cadIfDownChannelMaxRoundTripDelayMaximum round-trip propagation delay for cable
plant in Microseconds. Should be configured for
the furthest CM in all cable groups containing
this DownChannel. Default of 1600 Microseconds
is approxiamately 100 miles between the CMTS and
the furthest CM.rw Integer32 .1.3.6.1.4.1.4998.1.1.15.2.1.1.24 |
cadIfDownChannelAnnexThe value of this object indicates the conformance of
the implementation to important regional cable standards.
annexA : Annex A from ITU-J83 is used.
annexB : Annex B from ITU-J83 is used.
annexC : Annex C from ITU-J83 is used.rw Enumeration .1.3.6.1.4.1.4998.1.1.15.2.1.1.26 |
cadIfDownChannelPCNormAllowedUsageMaximum percentage of downstream resources that may be
used by non-emergency telephony services. This is also
the maximum amount of resources non-exclusively allocated
to sessions of this type. The default is set from the
globals in CadPCMibBase.rw Integer32 .1.3.6.1.4.1.4998.1.1.15.2.1.1.27 |
cadIfDownChannelPCNormResUsageMinimum percentage of downstream resources that may be
used by non-emergency telephony services. This is also
the maximum amount of resources exclusively allocated
to sessions of this type. If the value of this object
is non-zero, then a portion of the downstream bandwidth
will be set aside for normal telephony use only - reducing
the bandwidth that is available for normal data. The
default is set from the globals in CadPCMibBase.rw Integer32 .1.3.6.1.4.1.4998.1.1.15.2.1.1.28 |
cadIfDownChannelPCEmerAllowedUsageMaximum percentage of downstream resources that may
be used by emergency telephony services. The default
is set from the globals in CadPCMibBase.rw Integer32 .1.3.6.1.4.1.4998.1.1.15.2.1.1.29 |
cadIfDownChannelPCEmerResUsageMinimum percentage of downstream resources that may be
used by emergency telephony services. If the value of
this object is non-zero, then a portion of the downstream
bandwidth will be set aside for normal telephony use
only - reducing the bandwidth that is available for
normal data. The default is set from the globals in
CadPCMIbBase.rw Integer32 .1.3.6.1.4.1.4998.1.1.15.2.1.1.30 |
cadIfDownChannelPCTotalAllowedUsageMaximum percentage of downstream resources that may
be used by both normal and emergency telephony services.
The default is set from the globals in CadPCMibBase.rw Integer32 .1.3.6.1.4.1.4998.1.1.15.2.1.1.31 |
cadIfDownChannelPCPreemptionAllowedIndicates whether the system will preempt another session
for an emergency call. The default is set from the
globals in CadPCMibBase.rw TruthValue (SNMPv2-TC) .1.3.6.1.4.1.4998.1.1.15.2.1.1.32 |
cadIfDownChannelIfIndexthe ifIndex of this downstream channel.ro InterfaceIndex (IF-MIB) .1.3.6.1.4.1.4998.1.1.15.2.1.1.37 |
cadIfDownChannelPrimaryCapableWhen a row's cadIfDownChannelPrimaryCapable column is set to true(1)
then DOCSIS SYNC message generation is enabled on the downstream channel.
Otherwise, DOCSIS SYNC message generation is disabled.rw TruthValue (SNMPv2-TC) .1.3.6.1.4.1.4998.1.1.15.2.1.1.38 |
cadIfDownSpectralInversionWhen a row's cadIfDownSpectralInversion column is set to true(1),
then spectral inversion is enabled. Otherwise, spectral inversion
is disabled. Note that spectral inversion is a video PHY parameter
not used with DOCSIS channels; it is only used for channels of type
VOD and video-replica.rw TruthValue (SNMPv2-TC) .1.3.6.1.4.1.4998.1.1.15.2.1.1.39 |
cadDownChannelParams OBJECT IDENTIFIER .1.3.6.1.4.1.4998.1.1.15.2.2 |
cadDownChannelMaxFrequencyThis object is used to configure the C4 CMTS to accept maximum downstream
frequency limit that conform with the EuroDOCSIS specifications
(starndard range 112 MHz to 858 MHz), (extended 85 MHz to 999MHz)
or to the DOCSIS specifications (standard 91 to 867 MHz), (extended range 57 MHz to 999 MHz).
Changes to downstream frequency and width are verified against this
object to ensure the C4 CMTS does not exceed the downstream spectrum
limits imposed by this object. Attempting to decrease the downstream
frequency spectrum implied by this object will fail if at least
a single downstream is configured outside of the range for the new
value. It is recommended this object be set during initial system
setup.rw INTEGER (858000000 | 867000000 | 999000000) UNITS "hertz" .1.3.6.1.4.1.4998.1.1.15.2.2.1 |
cadDownChannelMinFrequencyThis object is used to configure the C4 CMTS to accept minimum downstream
frequency limit that conform with the EuroDOCSIS specifications
(starndard range 112 MHz to 858 MHz), (extended 85 MHz to 999MHz)
or to the DOCSIS specifications (standard 91 to 867 MHz), (extended range 57 MHz to 999 MHz).
Changes to downstream frequency and width are verified against this
object to ensure the C4 CMTS does not exceed the downstream spectrum
limits imposed by this object. Attempting to increase the minimum downstream
frequency limit implied by this object will fail if at least
a single downstream is configured outside of the range for the new
value. It is recommended this object be set during initial system
setup.rw INTEGER (57000000 | 85000000 | 91000000 | 112000000) UNITS "hertz" .1.3.6.1.4.1.4998.1.1.15.2.2.2 |
cadDownChannelAgcEnableEnable Automatic Gain Control on DCAMs.rw TruthValue (SNMPv2-TC) .1.3.6.1.4.1.4998.1.1.15.2.2.3 |
cadDownChannelOorRecoveryEnableTrue to enable toggling the Sequence Change Count for a DSID in response to
a CM-STATUS sequence number Out-Of-Range message.rw TruthValue (SNMPv2-TC) .1.3.6.1.4.1.4998.1.1.15.2.2.4 |
cadDsOfdmOcdDpdPlcIntervalHow often to send the OCD and DPD messages on a channel over the PLC.rw INTEGER .1.3.6.1.4.1.4998.1.1.15.2.2.5 |
cadDsOfdmDpdProfAIntervalHow often to send the DPD messages on a channel using profile A.rw INTEGER .1.3.6.1.4.1.4998.1.1.15.2.2.6 |
cadDownChannelLsredMinThreshThis parameter defines the start of the downstream latency
region where packets are randomly dropped. This value must
be less than or equal to cadDownChannelLsredMaxThresh.rw INTEGER .1.3.6.1.4.1.4998.1.1.15.2.2.7 |
cadDownChannelLsredMaxThreshThis parameter defines the end of the downstream latency
region where packets are randomly dropped. This value must
be greater than or equal to cadDownChannelLsredMinThresh.rw INTEGER .1.3.6.1.4.1.4998.1.1.15.2.2.8 |
cadDownChannelLsredMaxProbThis parameter defines the drop probability of a packet when
its downstream latency is equal to cadDownChannelLsredMaxThresh.
The probability of dropping a packet varies linearly from 0%
at a latency of cadDownChannelLsredMinThresh and the value of
this parameter at cadDownChannelLsredMaxThresh.rw INTEGER .1.3.6.1.4.1.4998.1.1.15.2.2.9 |
cadDownChannelVoiceShapingThis parameter defines whether downstream voice packets should
be shaped or not. When this this parameter is set to false,
voice packets that do not conform to the policing parameters
are dropped instead of being delayed.rw TruthValue (SNMPv2-TC) .1.3.6.1.4.1.4998.1.1.15.2.2.10 |
cadIfDsOfdmPowerTableThis status table contains the power parameters for a DS
OFDM channel. SEQUENCE OF CadIfDsOfdmPowerEntry .1.3.6.1.4.1.4998.1.1.15.2.3 |
cadIfDsOfdmPowerEntryAn entry shows the power setting and measured power
for one of the frequencies within an OFDM channel. CadIfDsOfdmPowerEntry .1.3.6.1.4.1.4998.1.1.15.2.3.1 |
cadIfDsOfdmPowerIfIndexThe ifIndex of this downstream OFDM channel. InterfaceIndex (IF-MIB) .1.3.6.1.4.1.4998.1.1.15.2.3.1.1 |
cadIfDsOfdmPowerFrequencyA relative frequency within the OFDM channel for power
control/status, in 6 MHz increments(i.e., legal values
are 3, 9, 15, etc). Integer32 .1.3.6.1.4.1.4998.1.1.15.2.3.1.2 |
cadIfDsOfdmPowerFineAdjustmentThe configured power for this OFDM channel frequency. This
consists of the base RF port power per channel plus any
configured tilt adjustment.rw TenthdBmV (-80..0) UNITS "dBmVtenths" .1.3.6.1.4.1.4998.1.1.15.2.3.1.3 |
cadIfDsOfdmPowerCurrLevelThe latest downstream power level reported by the port for
this frequency.ro TenthdBmV .1.3.6.1.4.1.4998.1.1.15.2.3.1.4 |
cadIfDsOfdmPowerMinLevelThe minimum downstream power level read on the port for
this frequency.ro TenthdBmV .1.3.6.1.4.1.4998.1.1.15.2.3.1.5 |
cadIfDsOfdmPowerMaxLevelThe minimum downstream power level reported by the port for
this frequency.ro TenthdBmV .1.3.6.1.4.1.4998.1.1.15.2.3.1.6 |
cadIfDsOfdmChlTableThis table describes the attributes of downstream
OFDM channels. SEQUENCE OF CadIfDsOfdmChlEntry .1.3.6.1.4.1.4998.1.1.15.2.5 |
cadIfDsOfdmChlEntryAn entry provides a list of attributes for a single
OFDM Downstream channel.
An entry in this table exists for each ifEntry with an
ifType of docsOfdmDownstream (277). CadIfDsOfdmChlEntry .1.3.6.1.4.1.4998.1.1.15.2.5.1 |
cadIfDsOfdmChlIfIndexThe ifIndex of this OFDM downstream channel. InterfaceIndex (IF-MIB) .1.3.6.1.4.1.4998.1.1.15.2.5.1.1 |
cadIfDsOfdmChlLowFreqThe lowest subcarrier center frequency of the low guard band
just below the encompassed spectrum. While this is the center
frequency of a subcarrier, it is the low edge frequency of
the OFDM channel. The center frequency of
subcarrier zero is 6.4 MHz less than this value. Zero means
not configured. Must be configured to go in-service.rw Integer32 (0|108000000..1770000000) UNITS "hertz" .1.3.6.1.4.1.4998.1.1.15.2.5.1.2 |
cadIfDsOfdmChlHighFreqThe highest subcarrier center frequency of the high guard band
just above the encompassed spectrum. While this is the center
frequency of a subcarrier, it is the high edge frequency of
the OFDM channel. Zero means not configured.
24 MHz <= (HighFreqEdge - LowFreqEdge) <= 192 MHz.
Must be configured to go in-service.rw Integer32 (0|132000000..1794000000) UNITS "hertz" .1.3.6.1.4.1.4998.1.1.15.2.5.1.3 |
cadIfDsOfdmChlPlcBlkLowSubcCentFreqThe center frequency of the lowest frequency subcarrier of
the 6 MHz encompassed spectrum containing the PLC.
Must be an integral number of Megahertz. Zero
means not configured. Must be configured to go in-service.rw Integer32 (0|108000000..1788000000) UNITS "hertz" .1.3.6.1.4.1.4998.1.1.15.2.5.1.4 |
cadIfDsOfdmChlCyclicPrefixThe cyclic-prefix, converted into samples
using the sample rate of 204.8 Million samples/second.rw Integer32 (192|256|512|768|1024) UNITS "samples" .1.3.6.1.4.1.4998.1.1.15.2.5.1.5 |
cadIfDsOfdmChlRolloffPeriodThe roll-off period used in windowing, converted into samples
using the sample rate of 204.8 Million samples/second.rw Integer32 (0|64|128|192|256) UNITS "samples" .1.3.6.1.4.1.4998.1.1.15.2.5.1.6 |
cadIfDsOfdmChlTimeIntlvrDepthThe number of symbols in the time domain for
interleaving. The range is 1..32 for 50 KHz
subcarrier spacing, and 1..16 for 25 KHz spacing.
A value of one means no time interleaving.rw Integer32 .1.3.6.1.4.1.4998.1.1.15.2.5.1.7 |
cadIfDsOfdmChlSubcSpacingThe subcarrier frequency width for this OFDM channel.rw Integer32 (25000|50000) UNITS "hertz" .1.3.6.1.4.1.4998.1.1.15.2.5.1.8 |
cadIfDsOfdmChlContPilotScaleFactorThe scale factor M used to calculate the total number of
continuous pilots defined using the PLC. The number
of continuous pilots also
depends on the encompassed bandwidth.rw Integer32 .1.3.6.1.4.1.4998.1.1.15.2.5.1.9 |
cadIfDsOfdmChlMaxRoundTripDelayMaximum round-trip propagation delay for cable
plant in Microseconds. Should be configured for
the furthest CM in all cable groups containing
this DownChannel. Default of 800 Microseconds
is approxiamately 50 miles between the CMTS and
the furthest CM.rw Integer32 .1.3.6.1.4.1.4998.1.1.15.2.5.1.10 |
cadIfDsOfdmChlPCNormAllowedUsageMaximum percentage of downstream resources that may be
used by non-emergency telephony services. This is also
the maximum amount of resources non-exclusively allocated
to sessions of this type. The default is set from the
globals in CadPCMibBase.rw Integer32 .1.3.6.1.4.1.4998.1.1.15.2.5.1.11 |
cadIfDsOfdmChlPCNormResUsageMinimum percentage of downstream resources that may be
used by non-emergency telephony services. This is also
the maximum amount of resources exclusively allocated
to sessions of this type. If the value of this object
is non-zero, then a portion of the downstream bandwidth
will be set aside for normal telephony use only - reducing
the bandwidth that is available for normal data. The
default is set from the globals in CadPCMibBase.rw Integer32 .1.3.6.1.4.1.4998.1.1.15.2.5.1.12 |
cadIfDsOfdmChlPCEmerAllowedUsageMaximum percentage of downstream resources that may
be used by emergency telephony services. The default
is set from the globals in CadPCMibBase.rw Integer32 .1.3.6.1.4.1.4998.1.1.15.2.5.1.13 |
cadIfDsOfdmChlPCEmerResUsageMinimum percentage of downstream resources that may be
used by emergency telephony services. If the value of
this object is non-zero, then a portion of the downstream
bandwidth will be set aside for normal telephony use
only - reducing the bandwidth that is available for
normal data. The default is set from the globals in
CadPCMIbBase.rw Integer32 .1.3.6.1.4.1.4998.1.1.15.2.5.1.14 |
cadIfDsOfdmChlPCTotalAllowedUsageMaximum percentage of downstream resources that may
be used by both normal and emergency telephony services.
The default is set from the globals in CadPCMibBase.rw Integer32 .1.3.6.1.4.1.4998.1.1.15.2.5.1.15 |
cadIfDsOfdmChlPCPreemptionAllowedIndicates whether the system will preempt another session
for an emergency call. The default is set from the
globals in CadPCMibBase.rw TruthValue (SNMPv2-TC) .1.3.6.1.4.1.4998.1.1.15.2.5.1.16 |
cadIfDsOfdmChlRfPortBasePowerThe CCAP operational transmit power. See the
reference for recommended and required power levels
for the equivalent total number of 6 MHz channels on
the RF port. The default is the DRFI maximum for 48 6 MHz SC
channels plus one 96 MHz OFDM channel equaling 16 equivalent
channels, for a total of 64 equivalent 6 Mhz channels.rw TenthdBmV .1.3.6.1.4.1.4998.1.1.15.2.5.1.17 |
cadIfDsOfdmChlSubcZeroCentFreqThe center frequency of subcarrier 0. This is 102.4 MHz less
than (cadIfDsOfdmChlLowFreq + cadIfDsOfdmChlHighFreq)/2
if cadIfDsOfdmChlLowFreq is divisible by 250 KHz.
Otherwise, it is 102.525 MHz less
than (cadIfDsOfdmChlLowFreq + cadIfDsOfdmChlHighFreq)/2.ro Integer32 UNITS "hertz" .1.3.6.1.4.1.4998.1.1.15.2.5.1.18 |
cadIfDsOfdmChlLowActSubcCentFreqThe low center frequency of the lowest active subcarrier in the
OFDM channel. The low edge of the encompassed spectrum is
half a subcarrier less than this value.ro Integer32 UNITS "hertz" .1.3.6.1.4.1.4998.1.1.15.2.5.1.19 |
cadIfDsOfdmChlHighActSubcCentFreqThe high center frequency of the highest active subcarrier in the
the OFDM channel. The high edge of the encompassed spectrum is
half a subcarrier more than this value.ro Integer32 UNITS "hertz" .1.3.6.1.4.1.4998.1.1.15.2.5.1.20 |
cadIfDsOfdmChlPlcLowSubcCentFreqThe center frequency of the lowest frequency subcarrier of
the PLC itself. By definition, this is 2.8 MHz higher than
cadIfDsOfdmChlPlcBlkLowSubcCentFreq (i.e., the PLC block
is 6 MHz, and the 400 KHz PLC is centered in that block).ro Integer32 UNITS "hertz" .1.3.6.1.4.1.4998.1.1.15.2.5.1.21 |
cadIfDsOfdmChlNumActSubcThe configured number of subcarriers based on the high and low
center frequencies of the active subcarriers in the
the OFDM channel.ro Integer32 .1.3.6.1.4.1.4998.1.1.15.2.5.1.22 |
cadIfDsOfdmChlDataTableThis table describes the read-only attributes of
downstream OFDM channels (frequency bands). SEQUENCE OF CadIfDsOfdmChlDataEntry .1.3.6.1.4.1.4998.1.1.15.2.6 |
cadIfDsOfdmChlDataEntryAn entry provides a list of read-only attributes for a single
OFDM downstream channel.
An entry in this table exists for each ifEntry with an
ifType of docsOfdmDownstream (277). CadIfDsOfdmChlDataEntry .1.3.6.1.4.1.4998.1.1.15.2.6.1 |
cadIfDsOfdmChlDataNumActSubcarriersThe number of non-excluded subcarriers in the OFDM channel.
7600 is the maximum allowed for a 190 MHz of active
Spectrum. 350 would be the worst case for 22 MHz of
Active spectrum with 50 KHz subcarriers, with 20 percent
exclusions.ro Integer32 (0 | 200..7600) .1.3.6.1.4.1.4998.1.1.15.2.6.1.1 |
cadIfDsOfdmChlDataNumContPilotsThe total number of continuous pilots. The total number of
of continuous pilots is the number defined by the PLC
plus the 8 pre-defined ones positioned around the PLC.ro Integer32 (0 | 16..128) .1.3.6.1.4.1.4998.1.1.15.2.6.1.2 |
cadDsOfdmProfileTableThis table defines the profiles assigned to an OFDM channel. SEQUENCE OF CadDsOfdmProfileEntry .1.3.6.1.4.1.4998.1.1.15.2.8 |
cadDsOfdmProfileEntryAn entry defines one profile on one channel. CadDsOfdmProfileEntry .1.3.6.1.4.1.4998.1.1.15.2.8.1 |
cadDsOfdmProfileIfIndexThe ifIndex of the channel using this profile. InterfaceIndex (IF-MIB) .1.3.6.1.4.1.4998.1.1.15.2.8.1.1 |
cadDsOfdmProfileIdThe ID of a profile plus one. OfdmProfileId .1.3.6.1.4.1.4998.1.1.15.2.8.1.2 |
cadDsOfdmProfileDefBitloadThe default bit-loading (modulation) for this profile.
If cadDsOfdmProfileId is 256, only qpsk, qam16,
and qam64 are legal. Otherwise, all but qpsk and qam0
are legal.rw CerOfdmModType .1.3.6.1.4.1.4998.1.1.15.2.8.1.3 |
cadDsOfdmProfileRowStatusThe RowStatus for controlling entries in this table.rw RowStatus (SNMPv2-TC) .1.3.6.1.4.1.4998.1.1.15.2.8.1.4 |
cadDsOfdmProfStatTableThis table provides counts and the average bits per Hertz
per OFDM channel per profile. SEQUENCE OF CadDsOfdmProfStatEntry .1.3.6.1.4.1.4998.1.1.15.2.9 |
cadDsOfdmProfStatEntryAn entry provides the values for one profile on one channel. CadDsOfdmProfStatEntry .1.3.6.1.4.1.4998.1.1.15.2.9.1 |
cadDsOfdmProfStatIfIndexThe ifIndex of this OFDM downstream channel. InterfaceIndex (IF-MIB) .1.3.6.1.4.1.4998.1.1.15.2.9.1.1 |
cadDsOfdmProfStatProfIdThe profile number plus one of this profile on this channel. OfdmProfileId .1.3.6.1.4.1.4998.1.1.15.2.9.1.2 |
cadDsOfdmProfStatAvgBitsPerSubcThe average number of bits per subcarrier times 100 across all
active subcarriers on the channel, rounded to nearest
hundredth. Continuous pilots and subcarriers in the PLC are
not included in this calculation, even though they are active.
NCP subcarriers are counted as if they could carry data,
because it is too difficult to factor them out, given their
variability.ro Unsigned32 UNITS "HundredthBit" .1.3.6.1.4.1.4998.1.1.15.2.9.1.3 |
cadDsOfdmProfStatReqModsThe modulations used by this profile and any exceptions
to this profile.ro CerOfdmModBitsType .1.3.6.1.4.1.4998.1.1.15.2.9.1.4 |
cadDsOfdmProfStatEtherFrameBytesThe count of Layer 2 Ethernet frame bytes that have
been sent on this channel using this specific profile.ro Counter64 .1.3.6.1.4.1.4998.1.1.15.2.9.1.5 |
cadDsOfdmProfStatTotalCodewordsThe number of codewords sent on this channel
using this specific profile.ro Counter64 .1.3.6.1.4.1.4998.1.1.15.2.9.1.6 |
cadDsOfdmProfStat30SecCwUtilThe codeword utilization percentage of this profile
on this channel. The utilization is measured over
the last 30 seconds.ro Unsigned32 .1.3.6.1.4.1.4998.1.1.15.2.9.1.7 |
cadDsOfdmProfStat30SecCwEffThe Efficiency percentage of this profile on
this channel over the last 30 seconds (i.e,.
the average number of data bits per codeword
used by this profile, divided by the size of
a codeword).ro Unsigned32 .1.3.6.1.4.1.4998.1.1.15.2.9.1.8 |
cadDsOfdmProfExceptionTableThis table defines exceptions to profiles on an OFDM channel. SEQUENCE OF CadDsOfdmProfExceptionEntry .1.3.6.1.4.1.4998.1.1.15.2.11 |
cadDsOfdmProfExceptionEntryAn entry defines one profile exception. CadDsOfdmProfExceptionEntry .1.3.6.1.4.1.4998.1.1.15.2.11.1 |
cadDsOfdmProfExceptionIfIndexThe ifIndex of the channel using this profile. InterfaceIndex (IF-MIB) .1.3.6.1.4.1.4998.1.1.15.2.11.1.1 |
cadDsOfdmProfExceptionProfIdThe Id of a profile plus one. OfdmProfileId .1.3.6.1.4.1.4998.1.1.15.2.11.1.2 |
cadDsOfdmProfExceptionLowFreqThe low edge frequency of a frequency range being assigned
a different bit-loading type from the default for the profile. Integer32 .1.3.6.1.4.1.4998.1.1.15.2.11.1.3 |
cadDsOfdmProfExceptionHighFreqThe high edge frequency of a frequency range being assigned
a different bit-loading type from the default for the profile.rw Integer32 (0 | 108000000..1770000000) UNITS "hertz" .1.3.6.1.4.1.4998.1.1.15.2.11.1.4 |
cadDsOfdmProfExceptionSkipTrue if using different bit-loading for odd and even
numbered subcarriers in this frequency range. False if
all subcarriers in the range use the single bit-loading
type given by cadDsOfdmProfExceptionMainBitload.rw TruthValue (SNMPv2-TC) .1.3.6.1.4.1.4998.1.1.15.2.11.1.5 |
cadDsOfdmProfExceptionMainBitloadThe main bit-loading (modulation) for this frequency range.
If skip is true, this is the bit-loading for only the even
numbered subcarriers. If false, it is for all subcarriers.rw CerOfdmModType .1.3.6.1.4.1.4998.1.1.15.2.11.1.6 |
cadDsOfdmProfExceptionOddBitloadThe bit-loading (modulation) for the odd numbered
subcarriers when skip is true. Ignored if skip is false.rw CerOfdmModType .1.3.6.1.4.1.4998.1.1.15.2.11.1.7 |
cadDsOfdmProfExceptionRowStatusThe RowStatus for controlling entries in this table.rw RowStatus (SNMPv2-TC) .1.3.6.1.4.1.4998.1.1.15.2.11.1.8 |